London, Sep 22 - An Indian-origin woman was to be sentenced Tuesday after being found guilty of murdering her two teenaged daughters in a frenzied knife attack at her home in Cambridgeshire.

Rekha Kumari-Baker, 41, admitted killing Davina, 16 and Jasmine, 13, but denied premeditated murder on grounds of diminished responsibility.

A jury at Cambridge Crown Court took only 35 minutes Monday to convict Kumari-Baker, who killed Davina and Jasmine with a kitchen knife as they lay sleeping in their beds June 2007.

The court heard there was 'much contention' between the defendant and her ex-husband David Baker over the care and custody of their children.

In a savage attack, the mother stabbed Davina 39 times as she fought to save herself. Jasmine received fewer wounds because she succumbed to the attack more easily.

After killing the girls, Kumari-Baker, a hotel worker, rang a friend to say: 'I have done something terrible.'

In a hand-written note she left at the murder scene, she wrote: 'I don't want them to get hurt as I did.'

She concluded the note by writing: 'My kids will not be a burden to anyone anymore.'

After the verdicts, police inspector Jim McCrorie said: 'In 25 years in the police service I have never before investigated such an upsetting or sickening crime.